Heat sink assembly structure

ABSTRACT

The present invention relates to a heat sink assembly structure, using at least a heat sink fastening member to combine with at least a heat sink, characterized in that; the heat sink fastening member has a V-shaped protrusion, a slot, and an elastic lock member; the elastic lock member has a V-shaped cross sectional structure, by means of the V-shaped protrusion combined tightly in the slot for assembling the heat sink and for forming a V-shaped slot; the assembled heat sink is fixed in a base by adding a solder into the V-shaped slot.

REFERENCE CITED:

[0001] Pub. No. U.S. 2002/0112846 A1

FIELD OF INVENTION

[0002] The present invention relates to a CPU heat sink assemblystructure, and more particularly, to a fastening member structure offixed heat sinks and a method for combining a heat sink assembly with abase.

BACKGROUND OF THE INVENTION

[0003] Since a central processing unit (CPU) is a very importantcomponent in a computer and computer technology is improving all thetime, resulting in higher clock speed and efficiency, at the same time,the heat dissipated is greater than before. Hence, the heat dissipationproblem should be tackled promptly. The present invention provides aheat sink assembly structure, By means of combination of at least a heatsink fastening member, effects of lowering down temperature and heatdissipation are achieved.

[0004] In general, there are two types of heat sink assembly for CPU.One is a packed aluminium heat sink, which is processed in packedaluminium type so that the heat sink and the base form a single piece(referring to FIG. 1A). The other one is an assembled heat sink, whichuses several heat sink fastening members to assemble several heat sinkstogether (FIG. 1B).

[0005] In FIG. 1A, the type of the conventional heat sink is a processedsingle piece packed aluminium, combining a heat sink 1 a and a base 1 bto form a single piece. However, due to the limitation of one-piecetechnology, the heat sink 1 a is slightly thicker, and intervals dwithin the heat sink assembly are wider. Hence the number of the heatsink 1 a is smaller, and the heat dissipation effect is worse.

[0006] Referring to FIG. 1B, it shows another type of the conventionalassembled type heat sink, using several heat sink fastening members 10to combine several heat sinks 1. The heat sink fastening member 10 usesa hook 11 and a hole 12 to hook up each other, However, this fasteningmanner only operates horizontally. Hence, it is easy to come offvertically, that brings about assembling problems.

[0007] Since the heat sink assembly needs to be soldered to the baseafter assembled, its compactness is very important, resistance of heatdissipation will increase, resulting in decrease of heat dissipationefficiency of the overall heat dissipation devices.

[0008] With the above shortcomings, the present invention provides aheat sink assembly with effects of heat dissipation, easy assembling,disability to come off, low heat resistance and high efficiency,especially, the fastening member for fastening the heat sink is improvedand the structure of the V-shaped slot is added.

SUMMARY OF THE INVENTION

[0009] With rapid development of CPU and increasing efficiency, at thesame time, the heat dissipation problem should be tackled promptly.

[0010] Therefore, the main objective of the present invention is todevelop a heat sink assembly structure, which is good for heatdissipation and assembling and keeps from coming off.

[0011] Another objective of the present invention is to provide anelastic lock member, supplying certain flexibility in the slot to avoidit from coming off horizontally and vertically during assembling.

[0012] Still another objective of the present invention is to provide aV-shaped slot in the heat sink assembly and to fix the heat sink in thebase by adding solder at the V-shaped slot

[0013] Specifically, the present invention is to provide a type of heatsink assembly structure refinement, using at least a heat sink fasteningmember to combine with at least a heat sink, characterized in that: theheat sink fastening member has a V-shaped protrusion, a slot, and anelastic lock member; the elastic lock member has a V-shaped crosssectional structure, by means of the V-shaped protrusion combinedtightly in the slot for assembling the heat sink and for forming aV-shaped slot, the assembled heat sink is fixed in a base by adding asolder into the V-shaped slot.

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be better understood from thefollowing detailed description of preferred embodiments of theinvention, taken in conjunction with the accompanying drawings, in which

[0015]FIG. 1A shows a perspective diagram of the conventional heat sinkassembly,

[0016]FIG. 1B shows a perspective diagram and a partial magnificationdiagram in a fastening configuration of the conventional heat sinkassembly;

[0017]FIG. 2 shows a perspective diagram of the heat sink assembly ofthe present invention;

[0018]FIG. 3A shows a perspective diagram in a fastening configurationof the heat sink assembly before assembled of the present invention;

[0019]FIG. 3B shows a perspective diagram in a fastening configurationof the heat sink assembly after assembled of the present invention;

[0020]FIG. 4 shows a perspective partial diagram in a side view in afastening configuration of the heat sink assembly of the presentinvention; and

[0021]FIG. 5 shows a perspective diagram of a combination of a heat sinkassembly and a base of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0022] To achieve the above-described objectives of the presentinvention, techniques, methods, specific characteristics andconfiguration of the present invention will be filly understood by meansof a preferred exemplary embodiment with accompanying drawings isdescribed as follows.

[0023] First of all, referring to FIG. 2, it shows a heat sink assemblystructure, using at least a heat sink fastening member 20 combining withat least a heat sink 2, to achieve the effect of heat dissipation(referring to FIG. 3B for a combination configuration). It ischaracterized in that: the heat sink fastening member 20 has a V-shapedprotrusion 21, a slot 22, and an elastic lock member 23; the elasticlock member 23 has a V-shaped cross sectional structure. By means of theV-shaped protrusion 21 combined tightly in the slot 22 for assemblingthe heat sink 2 and for forming a V-shaped slot 24, the assembled heatsink is fixed in a base 25 by adding a solder into the V-shaped slot 24.In a preferred embodiment, a width in a side of the heat sink of thepresent invention is substantially about 57.5 mm. During assembling theheat sink 2, as shown in the FIG. 3A, the elastic lock member 23 has aV-shaped cross sectional area with elastic structure. Therefore, theelasticity coefficient (k) of the material can be calculated by usingthe equation below, and also correspond with the elastic lock memberdisplacement angle Δθ to generate a required elastic force F.

F=kΔθ

[0024] From the above equation it is conceived that when the material,with a constant material elastic coefficient k has been chosen, therequired displacement angle Δθ can he set according to the requiredelastic force, to form the heat sink 2. Thus, after assembled, the heatsink will not come off horizontally and vertically and will becompletely fastened, as shown in FIG. 3B.

[0025] Besides, the heat sink fastening member 20 of the presentinvention is located on top and bottom side ends of the heat sink 2(that is, four corners of the heat sink 2). Accordingly, the heat sink 2can be held tightly, and does not come off easily, as in the in FIG. 3B.In the present invention, though four heat sink fastening members areused in the preferred embodiment, those persons skilled in the art mayre-combine, add, or delete the fastening members with reference to thepresent invention to achieve similar effect.

[0026] Further referring to FIG. 4 in side view, the combination of theelastic lock member 23 and the slot 22 forms at least an interval Dbetween two adjacent heat sinks 2. Moreover, the width of the intervalis substantially less than 2 mm. Hence, more heat sinks 2 can becombined together for increasing the heat dissipating surface area.

[0027] Further referring to FIG. 5, it shows a perspective diagram in acombination configuration of the heat sink assembly 26 and the base 25.The heat sink assembly 26 with the elastic lock member 23 and the slot22 combining with each other tightly forms a V-shaped slot 24; hence,the heat sink assembly 26 and the base 25, are combined together byadding a solder into the V-shaped slot 24 so as to lower the resistanceof the overall heat dissipation and increase the heat dissipationefficiency.

[0028] The present invention has been described above with reference toa preferred embodiment. However, it is not a limitation in theinvention. Various changes, modifications, and enhancements could bemade therein without departing from the scope of the present inventionas set forth in the following claims.

What is claimed is:
 1. A heat sink assembly structure, using at least aheat sink fastening member to combine with at least a heat sink,characterized in that: said heat sink fastening member has a V-shapedprotrusion a slot, and an elastic lock member; said elastic lock memberhas a V-shaped cross sectional structure, by means of said V-shapedprotrusion combined tightly in said slot for assembling said heat sinkand for forming a V-shaped slot; said assembled heat sink is fixed in abase by adding a solder into said V-shaped slot.
 2. The heat sinkassembly structure according to claim 1, wherein said heat sinkfastening member is located on top and bottom side ends of said heatsink.
 3. The heat sink assembly structure according to claim 1, whereinthe combination of said elastic lock member and said slot forms at leastan interval between said heat sink.
 4. The heat sink assembly structureaccording to claim 1, wherein said elastic lock member and said slot arecombined so tightly that said heat sink does not come off horizontally.5. The heat sink assembly structure according to claim 3, wherein awidth in a side of said heat sink is substantially about 57.5 mm.
 6. Theheat sink assembly structure according to claim 3, wherein said intervalis substantially less than 2 mm.